cysteine production of glutathione ncbi The Non-Essential Amino Acid Becomes Essential for Tumor Proliferation and Survival Cysteine Metabolism - an overview
Description
It's a solid starting point

It has been proposed that cytokines (e.g

The syringe is inserted into a small glass container that holds the sterile liquid medication and is filled to the desired amount for proper dosing

The characteristic deep blue color of properly chelated material comes from the copper complex itself

Cerebellum 8 , 211221 (2009)

doi: 10.1073/pnas.87.2.738
